正在获取HTTP状态400-客户端发送的请求在语法上不正确：使用curl来发送/发送json请求

我正在使用带有两个xml / json对象的spring MVC，并且遇到以下错误：

HTTP Status 400 - The request sent by the client was syntactically incorrect ().

这是我的控制器。

@RequestMapping(method=RequestMethod.POST, value="/emp")
public @ResponseBody EmployeeList addEmp(@RequestBody Employee e) {
    employeeDS.add(e);
    List<Employee> employees = employeeDS.getAll();
    EmployeeList list = new EmployeeList(employees);
    return list;
}


@RequestMapping(method=RequestMethod.PUT, value="/emp/{id}")
public @ResponseBody EmployeeList updateEmp(@RequestBody Employee e, @PathVariable String id) {
    employeeDS.update(e);
    List<Employee> employees = employeeDS.getAll();
    EmployeeList list = new EmployeeList(employees);
    return list;
}

我正在尝试使用curl发送JSON对象：

curl -v -X PUT -HContent-type:application/json --data '{"id":3,"name":"guest","email":"[email protected]"}' http://localhost:8080/rest/service/emp/1


curl -v -X POST -HContent-type:application/json --data '{"id":3,"name":"guest","email":"[email protected]"}' http://localhost:8080/rest/service/emp

我在pom文件中添加了以下jackson依赖项：

<dependency>
      <groupId>org.codehaus.jackson</groupId>
      <artifactId>jackson-mapper-asl</artifactId>
      <version>1.9.13</version>
    </dependency>
    <dependency>
      <groupId>org.codehaus.jackson</groupId>
      <artifactId>jackson-jaxrs</artifactId>
      <version>1.9.12</version>
    </dependency>

我还在servlet-dispatcher.xml中添加了以下配置：

<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
    <property name="order" value="1" />
    <property name="mediaTypes">
        <map>
            <entry key="xml" value="application/xml"/>
            <entry key="json" value="application/json" />

            <!--entry key="html" value="text/html"/-->

        </map>
    </property>
    <property name="defaultViews">
    <list>
      <!-- JSON View -->
      <bean
        class="org.springframework.web.servlet.view.json.MappingJacksonJsonView">
      </bean>

      <!-- JAXB XML View -->
      <bean class="org.springframework.web.servlet.view.xml.MarshallingView">
        <constructor-arg>
            <bean class="org.springframework.oxm.jaxb.Jaxb2Marshaller">
               <property name="classesToBeBound">
                <list>
                   <value>com.mkyong.common.bean.Employee</value>
                   <value>com.mkyong.common.bean.EmployeeList</value>
                </list>
               </property>
            </bean>
        </constructor-arg>
      </bean>
     </list>
  </property>
  <property name="ignoreAcceptHeader" value="false" />

    <property name="viewResolvers">
        <list>
            <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
                <property name="order" value="2" />
                <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
                <property name="prefix" value="/WEB-INF/pages/"/>
                <property name="suffix" value=".jsp"/>
            </bean>
        </list>
    </property>
</bean>


<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
    <property name="messageConverters">
        <list>
            <ref bean="marshallingConverter" />
            <ref bean="jsonConverter" />
        </list>
    </property>
</bean>

<bean id="marshallingConverter" class="org.springframework.http.converter.xml.MarshallingHttpMessageConverter">
    <property name="marshaller" ref="jaxbMarshaller" />
    <property name="unmarshaller" ref="jaxbMarshaller" />       
    <property name="supportedMediaTypes" value="application/xml"/>
</bean>

<bean id="jsonConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
    <property name="supportedMediaTypes" value="application/json" />
</bean>

这是Employee类的外观：

package com.mkyong.common.bean;

导入javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement（name =“ employee”）公共类员工{

private long id;
private String name;
private String email;

public Employee() {}

public Employee(long id, String name, String email) {
    this.id = id;
    this.name = name;
    this.email = email;
}

public long getId() {
    return id;
}
public void setId(long id) {
    this.id = id;
}

public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}

public String getEmail() {
    return email;
}
public void setEmail(String email) {
    this.email = email;
}

}

我的lib中有以下jar：

aopalliance-1.0.jar
aspectjrt-1.5.3.jar
aspectjweaver-1.5.3.jar
axiom-api-1.2.7.jar
commons-lang-2.5.jar
commons-logging-1.1.1.jar
jackson-core-asl-1.9.13.jar
jackson-jaxrs-1.9.12.jar
jackson-mapper-asl-1.9.13.jar
jaxb-api-2.1.jar
jaxb-impl-2.2.jar
joda-time-1.6.2.jar
opensaml-2.5.1-1.jar
openws-1.4.2-1.jar
slf4j-api-1.7.2.jar
spring-aop-3.1.3.RELEASE.jar
spring-beans-3.2.2.RELEASE.jar
spring-context-3.2.2.RELEASE.jar
spring-context-support-3.1.3.RELEASE.jar
spring-core-3.2.2.RELEASE.jar
spring-expression-3.2.2.RELEASE.jar
spring-jdbc-3.2.2.RELEASE.jar
spring-oxm-3.2.2.RELEASE.jar
spring-security-config-3.1.3.RELEASE.jar
spring-security-core-3.1.3.RELEASE.jar
spring-security-web-3.1.3.RELEASE.jar
spring-tx-3.1.3.RELEASE.jar
spring-web-3.2.2.RELEASE.jar
spring-webmvc-3.1.3.RELEASE.jar
spring-ws-core-2.1.2.RELEASE.jar
spring-ws-security-2.1.2.RELEASE.jar
spring-xml-2.1.2.RELEASE.jar
stax-api-1.0-2.jar
wsdl4j-1.6.1.jar
wss4j-1.6.5.jar
xmlsec-1.5.1.jar
xmlsec-2.0.jar
xmltooling-1.3.2-1.jar
xws-security-1.3.1.jar

我的GET适用于XML和JSON：

    @RequestMapping(method=RequestMethod.GET, value="/emp/{id}", headers="Accept=application/xml, application/json")
public @ResponseBody Employee getEmp(@PathVariable String id) {
    Employee e = employeeDS.get(Long.parseLong(id));
    return e;
}

用于以下curl命令：

curl -HAccept:application/xml  http://localhost:8080/rest/service/emp/1
curl -HAccept:application/json  http://localhost:8080/rest/service/emp/1